How Much Fuel Can a 48V Mild Hybrid Save?
1 Answers
After multiple tests, it was concluded that 48V mild hybrid technology has no significant impact on vehicle emissions but greatly affects fuel consumption, ideally achieving around 15% fuel savings. The principle of 48V mild hybrid involves adding a 48V auxiliary motor between the engine and transmission without altering the engine compartment layout. It serves two main purposes: first, to save fuel and improve engine smoothness during low-torque phases; second, to reduce the vehicle's electrical load. Below is more related information: Advantages of 48V Mild Hybrid: 1. Electrical Load: Many drivers encounter situations where they idle the car while waiting, listening to music or the radio to pass the time. The vehicle's electrical system operates at only 12V, and turning on the air conditioning, audio system, or other electronics further increases the load. Without the engine running, the battery might drain in just a few minutes, making it impossible to start the car. A 48V mild hybrid system, however, comes with a higher-capacity battery, allowing drivers to listen to music with the engine off and use more onboard electronics without worry. The system will start the engine when the battery is nearly depleted to prevent a complete discharge. 2. Fuel Savings and Low-Torque Smoothness: Engines often lack power during low-torque phases, especially small-displacement turbocharged engines, requiring drivers to press the accelerator harder to compensate. This results in higher fuel consumption. The 48V mild hybrid auxiliary motor addresses this issue by intervening during vehicle startup to reduce engine load and smooth out the jerky feeling caused by insufficient low-torque output. During driving, the 48V mild hybrid, like plug-in hybrid models, performs energy recovery to further save fuel. 3. Performance: The Changan CS55 equipped with a 48V mild hybrid system feels noticeably more responsive during startup compared to conventional models. As for fuel savings, the effect is impressive. The advantage in electrical load management is particularly evident, eliminating concerns about battery drain.
